I think this thread was badly needed at this time. Lets talk about Nerine first. I am growing them past 2 years and this year i got few tips from ashfaq(Pride seeds):
1- If plants have grown foliage from last year, put them out of pot/soil bed, keep them in shade for few days and then put them back. Probably to shock the plant so that in defense it flowers?
2- Remove offsets of bulbs, they pull energy from parent bulb thus preventing it to flower.

I know they do better in small plastic pots crowded. Mine do not go dormant sadly during monsoon which they should. A little potash should be helpful. They do not like temps into 40's constantly. Any tips to make nerine bloom?

Yes, like Lycoris, it is advisable to pull out the bulbs and then replant them in late monsoon/early autumn. For now you can place the potted bulbs in semi shade or maybe full sun for an hr or 2 daily and stop watering to dry all its foliage. This is the time it gathers heat energy to produce blooms in autumn. Remember not to water them to much as humidity level has gone up due to recent monsoon rains. Removing the bulb-lets from the mother bulb is true for all the bulbous plants. But my Nerines rarely produce any bulblets. They dont multiply easily and quickly as compared to rain lillies.

Potting medium is also very important, like most of the bulbs, Nerines dont do well in heavy clays. Sand along with patti ki khad and (crushed) manure is what i use. I have never used potash.
If they again didnt bloom this year treat them like amaryllis. Cut their leaves to 1 inch above the bulb in winters, and pull out the bulbs. Keep them in dry shade and them plant them in fresh medium after monsoon. That way they would be left with no reason for not blooming.